Jambs nasmyth



lacting steam cylinder, a hammer block, (B)

JAMES NASMYIH, OF PATRICROFT, ENGLAND.

STEAM PILE-DRIVER.

Specification of Letters Patent No. 5,172, dated J' une 26, 1847.

To all whom t may concern.'

Beit known that I, JAMES NASMYTH, of Patricroft, in the county ofLancaster, in the Kingdom of England, have invented a new and usefulMachine for Driving Piles; and I do hereby declare that the following isa full, clear, and exact description of the construction and operationof the same, reference being had to the annexed drawings, making part ofthis specication, in which- Figure l is the elevation front view, Fig.2, elevation side view, Fig. 3, ground plan Figs. 4:, 5, and 6 somedetails onlarger scale.

The principal feature in this my invention consists in the first placein the employment of the pile which is about to be driven, for thesupport of the pile driving part of my apparatus (which being ofconsiderable weight, consisting as it does of the cylinder A,constructed like thatof a common single or monkey which isa heavy weightattached to the piston rod (E) of the steam cylinder and a cylindricalor other formed case (C) which is attached to the lower end of thiscylinder and acts as a guide to the monkey and incloses the head of thepile on which it rests; these together weigh about 3 tons (more or less)and very importantly aids' the driving of the piles by predisposing itto penetrate into the ground.

The maner in which the apparatus A B C is made to rest on the pile maybe seen by reference to Fig. 2 and Fig. 4 in which it will be seen thatthe guide case C has a mouth piece w so formed as while it premits thehead of the pile to pass up intothe inside of the case to a certainextent, yet prevents the apparatus A B C fro-m sinking farther downuponthe pile by embracing the shoulders of the'pile at a: on which thereforeit rests with its'entire weight as before described. This is the firstfeature of novelty in my pile driving machine.

The second feature of novelty consists in the application of the directacting steam hammer to the driving of piles.

The process' is as follows: Steam or other elastic fluid being-admittedunder the piston D (Fig. 4L) by a suitable valve or valves (raises upthe hammer, monkey or `beetle B; the same being connected with thepiston D by the piston rod E) and when it has by its pressure raised upthe hammer block B to a certain height this steam is allowed to escapefrom under the piston, the action of gravity then causes the hammerblock to fall with great force on the. head of thepile, so knocking itinto the ground, which action is in# stantly followed by a proportionatedescent ofthe whole apparatus A B C and no sooner has this again settleditself on the shoulders of the pile when by the above described actionthe pile receives another blow, and so rapid 1s the recurrence of' theseblows,V that they can be dealt out on the head of the pile at the rateof upward of 80 per minute. The valve can be worked by the apparatus nowin use for direct action steam hammers or in any other way.

A third feature of my invention consists in the manner in which I causethe pile, while it is being driven, to become as it were part and parcelof the machine. This I effect by erecting an upright pole or stanchion(Gr) on the platform on which the boiler rests at one side which pole isbraced by Vguy chains or ropes, and on which are aiiixed plates of ironforthe guide pieces (F, F)k

to slide that connectv the cylinder &c to the enabled to convey thesteam from the boiler `v II to the cylinder A at whatever position thevcylinder A may be with respect to the boiler.- This jointed steam pipeis seen in Fig. l and marked I I I, the joints and lengths into whichthe pipes are divided permit them to fold up length by length accordingto the relative position of the apparatus A B C and the boiler H. Thejoints should not be f less than three in number and are made somewhatsimilar to gas fittings so as to beY steam tight and turn freely intheir sockets. These then are the principal features of novelty which incombination I claim as my invention applied to and used for the aforeisaid purpose of driving piles. y l d What I claim as my invention, anddesire 3. I claim the combination of the movto secure by Letters Patentisable engine with the boiler by means of l. The employment of the pileto be jointed steam pipes capable of accommodatdrven, as the foundationor base onfvvhich ing themselves to the varying position of the 5 torest my pile driving apparatus. machine during the descent of the pile,sub- 15 2. The manner in Which I` secure and. 1stantially ashereindescribed. guide the pile in its descent by its tempo- JAMES NASMYTH.rary attachment to, or connectiony with theM4 Witnesses: drivingapparatus, and upright frame Work l ELLIS CUNLEFE,

PRIESTLEY BIRCH. A

L0 of the machine, and.

